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                <h1 class="entry-title">浏览器支持</h1>
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                <h2>Current Active Support</h2>

                <h3>桌面端</h3>
                <ul>
                    <li>Chrome: (Current - 1) and Current</li>
                    <li>Edge: (Current - 1) and Current</li>
                    <li>Firefox: (Current - 1) and Current, ESR</li>
                    <li>Internet Explorer: 9+</li>
                    <li>Safari: (Current - 1) and Current</li>
                    <li>Opera: Current</li>
                </ul>

                <h3>移动端</h3>
                <ul>
                    <li>Stock browser on Android 4.0+<sup>[1]</sup></li>
                    <li>Safari on iOS 7+</li>
                </ul>

                <p>[1] Android浏览器4.0-4.3的变通方法已经存在于代码库中，但我们不再主动测试这些版本。</p>

                <p>上述浏览器中jQuery的任何问题都应在jQuery中报告为bug。</p>

                <p><em>(Current - 1) and Current</em> 表示我们支持浏览器的当前稳定版本及其之前的版本。例如，如果浏览器的当前版本为24.x，则我们支持24.x和23.x版本。</p>

                <p>Firefox ESR（Extended Support
                    Release）是一个Firefox版本，供学校、大学、企业和其他需要扩展大规模部署支持的组织使用。它基于Firefox的常规版本，每隔几个版本就与下一个常规Firefox同步—示例ESR版本包括Firefox
                    47、52和60。在任何给定时间，最多有两个ESR版本可用；jQuery支持这两种方法。有关更多信息，请参阅<a
                            href="https://www.mozilla.org/en-US/firefox/organizations/">Mozilla网站</a>。</p>

                <p>如果您需要支持Internet Explorer 6-8、Opera 12.1x或Safari 5.1+等较旧的浏览器，请使用<a
                        href="https://code.jquery.com/jquery/#jquery-all-1.x">jQuery 1.12</a>。</p>
                <hr>

                <h2>不支持的浏览器</h2>
                <p>虽然jQuery在较旧的浏览器版本中运行时<em>可能</em>不会出现重大问题，但我们不会在这些版本中主动测试jQuery，通常也不会修复其中可能出现的错误。</p>

                <p>同样，jQuery不会修复浏览器预发布版本（如beta版或dev版）中的错误。如果您在浏览器的预发行版中发现jQuery存在缺陷，则应向浏览器供应商报告该缺陷。</p>

                <hr>

                <h2>关于浏览器支持</h2>
                <p>
                    jQuery经常通过单元测试在所有受支持的浏览器上进行测试。但是，如果使用jQuery的网页的代码利用（或受制于）特定于浏览器的行为，则该网页可能无法在同一组浏览器中工作。测试对于完全支持浏览器至关重要。Microsoft
                    Edge Developer站点提供<a
                        href="https://developer.microsoft.com/en-us/microsoft-edge/tools/vms/">虚拟机</a>，用于测试许多不同版本的Internet
                    Explorer。其他浏览器的旧版本可以在<a href="https://oldversion.com/">oldversion.com</a>上找到。
                </p>

                <p>只有最新版本的jQuery经过测试和更新，以修复bug或添加功能。发现bug的旧版本用户应升级到最新发布的版本，以确定bug是否已修复。<a
                        href="https://github.com/jquery/jquery-migrate/#readme">jQuery
                    Migrate 插件</a>可能有助于在版本升级过程中识别和修复问题。
                </p>

                <hr>

                <h2>关于CSS选择器兼容性</h2>
                <p>无论浏览器是否支持CSS选择器，<a
                        href="../../api.jquery.com/category/selectors/">api.jquery.com/category/selectors/</a>上列出的所有选择器在作为<code>jQuery</code>函数的参数传递时都将返回正确的元素集。
                </p>
                <p>使用jQuery的<code>.css()</code>方法应用的CSS样式取决于浏览器的支持级别。通常，jQuery不会试图克服浏览器样式呈现的限制(<code>opacity</code>是一个例外，jQuery为旧版InternetExplorer的替代实现提供了“垫片”。）此外，在版本1.8之前，jQuery不规范供应商前缀属性。
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                                 alt="Learning jQuery 4th Edition by Karl Swedberg and Jonathan Chaffer" width="92"
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                            Learning jQuery Fourth Edition
                            <cite>Karl Swedberg and Jonathan Chaffer</cite>
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                                 alt="jQuery in Action by Bear Bibeault, Yehuda Katz, and Aurelio De Rosa" width="92"
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                            jQuery in Action
                            <cite>Bear Bibeault, Yehuda Katz, and Aurelio De Rosa</cite>
                        </a>
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                        <a href="https://www.syncfusion.com/ebooks/jquery">
                            <img src="//jquery.com/jquery-wp-content/themes/jquery/content/books/jquery-succinctly.jpg"
                                 alt="jQuery Succinctly by Cody Lindley" width="92" height="114">
                            jQuery Succinctly
                            <cite>Cody Lindley</cite>
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